Question

a resistor connected to the battery is heated due to current through it which of the following quantity does not vary
A)resistance
B)drift velocity
C)resistivity
D)no of free electrons

Answer 1

drift velocity is the answer. ..

Answer 2

The answer to your question is :

D) number of free electrons

The number of electrons do not change at all when a resistor connected to a battery is heated

Thus it does not vary

Thats your answer

Hope it helps

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